You can use these switchback LED bulbs to replace the stock 7443/3157/1157 front turn signal light bulbs to light up xenon white or crystal blue for driving/parking lights and amber yellow for the signal turning. Features: Dual Color Switchback White/Amber Parking or DRL is White. Turn Signal light is Amber Switchback Crystal Blue/Amber Parking or DRL is crystal blue. Turn Signal light is Amber Specification: LED Type: Each bulb 45-pieces high power 2835 LED. 45 piece high power 24 piece Ambe 2835-SMD Chips & 21 piece White 2835-SMD Chips on each LED bulb Much brighter than other switchback LED bulbs on the market because of this new design! Usage: Daytime Running Light (White/crystal blue) + Turn Signal Light (Amber) Interface Type: T20 7443 W21/5W , 1157 BAY15D P21/5W , T25 3157 P27/7W Beam Angle: 360 degree Voltage: DC 12V Lumens: 1400lm Flashing pattern: amber-off-amber-off Lighting Pattern: Light up extremely bright white(crystal blue) for driving/parking lights and amber color for turn signal lights HD Glass Projector Stronger light penetration and wider angle projection 1:1 Same position as halogen plug and play standard base, easily to install Compatible: 3157: 293 3057 3057A 3057LL 3155 3155LL 3156 3156LL 3157A 3157NALL 3356 3357 3357A 3357LL 3457ALL 3457AST 4057 4057LL 4114 4157 4157LL 4157NALL S25 3757 3757A 1157:134 1016 1034 1076 1130 1142 1152 1158 1493 1816 12499 12594 2057 2357 2357A 2396 2397 3497 7528 BA15D BAY15D 7443:7444NA 7440 T20 990 991 992 7443R W21/5W Package Included: 1pc Switchback LED Bulb